Apparatus for making air-hole glassware.



I FRANK H. BLACKBURN, OF FOSTCRIA, ELECTRIC LAMP COMPANY, CF C `air-hole glassware.

UNITED sTATEs PATENT .oEErOE OF NEW JERSEY.

OHiO, Assieuon TO THE NATIONAL LEVELAND., OHIO, A CORPORATION APPARATUS FOR MAKING AIR-HOLE GLASSWARE.

Specification c-f Letters Patent.

Patented Jan. 23, 1906.

Application filed March Z, 1906. Serial No. 248.022.

To a/ZZ whom it may concern: p

Beit known that I, FRANK H. BLACKBURN, a citizen of the United States, residing at Fostoria, in the county of Seneca and State of Ohio, have invented a certain new and useful Im rovement in Apparatus for Making Air- Holb Glassware, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings.

The object of this invention is to provide an efficient apparatus for making holes in Such ware has a 'circumferential row .of holes a'bout it which must be smooth and regular to be of-neat appearance. My apparatus provides means for heating the Ware in spots where the holes are to be and then subjecting it to an internal air-pressure, forcing outward such heated spots in forni of horns which are broken off, leaving a round hole, the edges of which are 'then ground down and glazed. These features are hereinafter more fully described, and their essential characteristics set out in the claims.

In the drawings, Figure 1 is a side elevation of my apparatus, and Fig-2 is a plan thereof.

vA bed-plate A constitutes the principal frame of my apparatus. Carried by the bedplate is a holder B for the globe. This holder comprises an asbestos cup in which the globe to be treated seats, the cup making a more or less nearly air-tight connection with the lobe. The cup is made with an asbestos ining b and a bottom disk Z1. 7

Placed about the axis of the Crlassware and at equal distances from each other are flameproducers consisting of the gas-burner C and the air-pipe D. The parts are so positioned as to project an intense iianie against the side of the glassware at the point where the hole is to be.

Pivotally carried by a suitable standard a, rising from the bed-plate is a lever E, on thc forward end of which is a hood F, adapted to make more or less air-tight connection with the upper end of the glassware Z. A s ring Cr tends to hold the lev'er in position wit 1 the hood elevated; but the latter is adaptedto be drawn down into engagement,Y with the glassware by a depression ol' the operatinglever ll, connected with the lever E by a link J. As shown in the drawings, thc lever E in `front el' its pivot is hollow, the bore communicating with the hollow of the hood F. The standard ay is made hollow and constitutes an airpipe. Itsupper end is bent over, forming the hollow pivot c2 of thev lever F, This pivot has an opening a3, which is adapted to aline with the bore of the lever E when the' same is drawn down to cause the hood to erigage'the glassware, but is out of such registration when the hood is in the idle position. The pivot thus makes a key or valve for the lever, turning on compressed air automatically when thehood is brought into position. A screw a4 holds -the lever on its pivot and also plugs the end of theiair-pipe.

lIn operation the glassware is placed in the cup and the flames heat the various spots about it. When these spots are sutliciently hot, the lever H is depressed, drawing down the hood F and turning compressed air into the interior. This compressed air forces the soft heated spots outward in the form of projections or horns. Such outward forcing continues until .the pressure is relieved by some of the horns being forced open by the air. These horns are afterward broken off and the rough edges ground down and glazedl to complete the operation. In order to prevent the air which escapes through a ruptured horn fromblowing out the adjacent flame, I mount the gas-burners and air-pipes so that the flames are projected a little out'of the radial. The horn, however, is forced out radially and the air which issues from its end misses the flame.

I claiml. In an apparatus for making air-hole glassware, the combination of a support for the glassware, a series of flame-producers placed there-about and* immovable with reference to the support, and means for causin compressed air to pass into the interior o the glassware.

2. In an apparatus for making air-hole glassware, in combination, means for stationarily supporting the glassware, a series of flame-producers placed thereabout, a hood means for conveying compressed air thereto, and means 'for moving the hood into engagement with the glassware.

3. In an apparatus for making air-hole glassware, a support adapted to make an approximately air-tight connection with the.

glassware at its base, a series of flaniepro- IOO l.proximately air n 56,111 an apparatus for making air-holeV i .duct leadin throughone a series of ame-producer'splaced vWare and adapted to fradial, whereby the air puncturing the heated glass wi ware, a ysupport :the v glassware, means duoers each adapted to project a point of ame against the glassware above such support,'means adapted to tightly engage' the upperend of the globe, said means .having apassage-way for compressed anism for operating said means.

4,. In ,an apparatus for making air-hole glassware, the combination of means for engaging in approximately air-tight manner the ends of the ware, a compressed-air con` of lsaid means, and about the :project names against the glassware in directlonslslightly out of the forcing outward and not blow out the flames, i

5. In a machine for making air-,hole glass* for the glassware lined with asbestos to make a non-conducting and ap- -tight connection with the glassware, means for heating the glassware simultaneously in a plurality of places above auch support, and means for forming projections at the heated points of the glassware.

glassware, the combination of a support for for maintaining comair, and mechl the glassware, means for conducting com` to said hood, a spring tending lto and means for lowering the hood into engagement with pressed air raise said arm, arm to bring the the glassware.

8. In an apparatus for making air-hole5 making air-hole glass# i glassware, the combination of a support for ij theglassware, a series of flame-producers placed thereabout and adapted to project points of ilame against the glassware abo/ve itslower edge to soften spots thereon, and means' for conducting compressed4 air into the interior ol' the glassware.

In testimony whereof I hereunto al'iix myv signature inthe presence of two witnesses. s FRANK H. BLACKBURN. Witnesses:

` :MARY F.`Ros1NsoN, ETHEL Srluin., 

